Counterpoint has a recent post on how camera and smartphone screen resolutions have been improving. Mid-price phones now have cameras and screens with resolutions closer to flagship devices. While this might have implications for OEM flagship device sales, it also affects developers.
We can now develop more sophisticated apps that make practical use of the camera. For example, for many years I have been working on medical diagnosis apps that use image processing. This kind of processing has previously only been possible on the few devices providing high resolution images.
Now that the majority of users have higher-end cameras, lots of self-diagnosis scenarios become possible. Couple this with server-side big data and it opens up a new world of possibilities.